Switch-rod mechanism.



' No.'768,592. Y

PATENTED AUG. 3o, 1904. H. G. BLPBORG. SWITCH Ron MBGHANISM.

E L I F N 0 I T o, I L P.

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AUNITED :STATES Patented August 3o, 1904.

PATENT OFFICE.

HENRY G. ELFBORG, OF CHICAGO, ILLINOIS.

SWITCH-TROD NIECHANISM. v

SPECIFICATION forming part of Letters Patent No. 768,592, dated August 30,1904. Application filed February 8, 1904. Serial No. 192,645. (Nokmodel.)

To (2l/ZZ whom t mm1/y concern:

Be it known that I, HENRY G. ELFBORG, a citizen of the United States, residing at Chicago, in the county of @ook and State of Illinois, am the inventor of certain new and useful Improvements in Switch -Rod Mechanisms, of which the following is a specification.

My invention relates to that class of switch- 'rod mechanisms having a bracket secured to one of the switch-rails to be operated and a switch-rod secured to the other of such switch- .rails in any ordinary and well-known manner,

one of such members being provided with a pair of jaws between which the other is slidably mounted and each of such members being provided with perforations through which extends an adjusting pin or bolt for permitting the jaws to be adjusted to the desired position and holding them in place when so adjusted.

The principal object of my invention is to provide a simple, economical, and eliicient.

switch-rod mechanism.

A further object of the invention is to provide a switch-rod mechanism with means whereby the parts may be adjusted and heldV `*desired adjustments.

Other and further objects of the invention will appear from an examination of the drawings and the following description and claims.

The invention consists in the features, com'- binations, and details of construction hereinafter described and claimed,

In the accompanying drawings, Figure l is. a sectional elevation 0f a switch-rod mechanism constructed in accordance with my improvements; Fig'. 2, a plan view of the parts shown'in Fig. 1; Fig. 3," a View in elevation of the adjusting pin or bolt, and Fig. i a bottom plan view of the adjusting pin or bolt shown in 3.

In constructing a switch-rod mechanism in accordance with my improvements I pro- Vide a bracket c, which is secured to a switchrail by means of a'bolt c and nut CZ, extending through suitable perforations in such parts, or`in any ordinary and well-known manner, such switch-rail being one of a pair for receiving the switch-rod. rI`he upper jaw l of the bracket is provided with a perforation g',

having corrugated walls, and the lower jaw 1s provided with a substantially cylindrical perforation IL, in alinement with the axial center. An adjustf of such corrugated perforation. ing pin or bolt c' isprovided, having an upper corrugated neck portion y", the corrugations of which correspond to and intermesh with the corrugations of the upper jaw in the bracket when such adjusting-pin is in operative position. 'lhe pin is thus prevented from turning, f

,- and the parts are held firmly in position. This adjusting pin or bolt is provided with a lower depending'cylindrical 'portion c, in alinement with the axial center of the upper corrugated portion of such bolt and extending through 'theperforation in the lower jaw of the bracket, and a central cylindrical'eccentric portion Z, integral. with such upper and lower portions of the bolt, is mounted in engagement with a perforation in the switch-rod m, into which.

the eccentric portion of the bolt fits with only suflicient play'to permit the bolt to be readily turned in making the necessary adjustments.

The length of the circular depending portion of the bolt exceeds the width of the upper jaw of the bracket and upper corrugated portion of the bolt. v It will thus be seen that the bolt may be raised, so that its corrugated portion is out of engagement with the bracket, and the lower depending portion will still be in engagement with the lower jaw of the bracket and the circular eccentric portion in engagement with the switch-rod. The parts may thus be adjusted without entirely removing the pin and without separating such parts lfor each adjustment. The corrugated upper portion, cylindrical lower portion, and'eccentric portions of the bolt or pin being integral, such pin may of course be removed entirely when desired and the adjustments made between the parts, the pin being afterward re- IOO placed. The upper end of the pin is provided with an annular head n, and the depending portion is provided with a mit o in threaded eng'ag'ement therewith and a cotterp for holding' such nut in position.

By this` arrangement it will be readily seen that the adjusting' nut or bolt is adapted to hold the bracket and switch-rod, and thereby the switch-rails, in any desired position with relation to each other within certain limits. IV hen it is desirable to hold the rails at the greatest distance apart, this may be accomplished by placing the bolt in the position shown in Fig. l. IVhen it is desirable to bring the rails into position nearest to each l other, it may be done by turning' the bolt a half-revolution from the position shown in Fig. l and adjusting' the parts to correspond. It follows as a matter of course that such rails may be adjusted to any intermediate position between these twov extremes by turning the bolt a corresponding distance in either direction between these two extreme positions.

I claiml. In an apparatus of the class described, the combination of a bracket and a switch-rod one of such members having' a perforation with corrugated walls, anda bolt extending' through such bracket and switch-rod and provided with a corrugated neck portion in engagement with i the'member having' the corrugated gerforation, and an eccentric portion in engagement with the other member, substantially as described.

2. In an apparatus of the class described, the combination of a bracket and a switch-rod one of such members having a perforation with corrugated walls, and a bolt extending' through such bracket and switch-rod and provided with a corrugated neck portion in engagement with the member having the corrugated perforation, such bolt having a substantially cylindrical eccentric portion in engagement with the other member, substantially7 as described.

3. In an apparatus of the class described, the combination of a bracket secured to a switchrail, a switch-rod adapted to be secured to the other switch-rail one 0f such members having a perforation with corrugated walls, and a bolt extending' through such bracket and switchrod and provided with a corrugated neck portion and depending portion in engagement with the member having the corrugated pei'- foration such bolt having a substantially cylindrical eccentric portion in engagement with the other member, substantially as described.

4. In an apparatus of the class described, the combination of a bracket secured to a switchrail, a switch-rod adapted to be secured to the other switch-rail one of such members having a perforation provided with corrugated walls, a bolt extending through such bracket and switch-rod and provided with a corrugated neck portion and a substantially cylindrical depending portion in alinement with the axial center of such neck portion both in engagement with the member having' the corrugated perforatiol'ls such bolt having a` substantially cylindrical eccentric portion in engagement with the other member, and means for holding such bolt in position. substantially as described.

In an apparatus of the class described, the combination of a bracket secured to a switchrail. a switch-rod adapted tobe secured to the other switch-rail one of such members being provided with a substantially cylindrical perforation therethrough and the other of such members being' provided with an upper jaw having a perforation with corrugated walls and a lower jaw having' a substantially cylindrical perforation in alinement with the axial center of the perforation in the upper jaw, and a bolt provided with a corrugated upper neck portion and a substantially cylindrical depending portion in engagement with such jaws and havimg` a substantially cylimlrical eccentric portion in eng'agen'icnt with the member which extends between the jaws, substantially as described.

(i. In an apparatus of the class described, the combination of a bracket secured to a switchrail and having' one end provided with an upper jaw having' a perforation with corrugated walls and a lower jaw having a perforation in alinement with the axial center of the perforation in the upper jaw, a switch-rod adapted to be secured to the other switch-rail slidably mounted between the jaws of the bracket member and provided with a substantially cylindrical perforation, and a bolt provided with an upper corrugated neck portion and a substantially cylindrical depending portion in engagement with the jaws of the bracket and having' a substantially cylindrical eccentric portion in engagement with the switch-rod, substantially as described.

7. In an apparatus of the class described, the combination of a bracket secured to a switchrail, a switch-rod adapted to be secured to the other switch-rail one of such members having a substantially cylindrical perforation and the other of such members being provided with an upper jaw having a perforation with co1'- rug'ated walls and a lower jaw having a substantially cylindrical perforation in alinement with the axial center of the perforation in the upper jaw, a bolt provided with a corrugated upper neck portion in -eng'agement with the corrugations of the upper jaw and having a, substantially cylindrical depending portion in engagement with the lower jaw and having a substantially cylindrical eccentric portion in engagement with the member which extends between the jaws, and means for holding such bolt in position, substantially as described.

HENRY ELF BOR( l.

Iitnesses: K

Ham-:Y I. Cnon'nn, ANNA L. Savona.

IOO 

